September Weather in Henderson, United States

Last updated: June 24, 2025

In September, the average temperature in Henderson, United States reaches a warm 30°C (85°F), with the mercury occasionally dipping to a cool 12°C (54°F) and soaring up to a sizzling 45°C (114°F). Visitors can expect 4 mm (0.2 in) of rain over the course of 1 day, accompanied by an average humidity of 41%, creating a comfortable atmosphere for outdoor adventures.

September Temperature in Henderson

In September in Henderson, the average temperature is 30°C (85°F). The maximum can reach 45°C (114°F), and the minimum can be as low as 12°C (54°F). Be prepared for a warm climate and consider bringing lightweight clothing, along with layers for cooler evenings.

September Weather in Henderson: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Henderson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Henderson, September typically has an average temperature of 30°C (85°F), with highs reaching up to 45°C (114°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Henderson generated using information from the Copernicus Climate Change Service.

September Precipitation in Henderson

In Henderson in September, the precipitation amount is 4 mm (0.2 in) during 1 day.

September Precipitation Trends in Henderson

The chart displays monthly precipitation patterns in Henderson, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Henderson, September typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Henderson

In Henderson in September humidity is 41%. With an average temperature of 30°C (85°F), this humidity feels like a warm embrace, making outdoor adventures comfortable yet slightly sticky, perfect for leisurely strolls or exploring the sights, but travelers should stay hydrated to enjoy the experience fully.

September Average Humidity in Henderson

This chart illustrates the average monthly humidity levels in Henderson, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Henderson is approximately 41%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Henderson

In Henderson in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Henderson.

Maximum UV Index Levels in Henderson for September

The chart shows the monthly maximum UV Index (UVI) for Henderson in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Henderson typically reaches 10, which falls under the very high exposure category.

Data source: Henderson September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Henderson Compares to Other Months

Weather in Henderson varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Henderson, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Henderson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	18 mm (0.7 inches)	76%	moderate
February Weather	12°C (53°F)	18 mm (0.7 inches)	80%	high
March Weather	16°C (61°F)	18 mm (0.7 inches)	69%	very high
April Weather	21°C (71°F)	3 mm (0.1 inches)	57%	very high
May Weather	25°C (78°F)	5 mm (0.2 inches)	45%	extreme
June Weather	32°C (90°F)	1 mm (0.1 inches)	34%	extreme
July Weather	35°C (95°F)	15 mm (0.6 inches)	29%	extreme
August Weather	34°C (94°F)	9 mm (0.4 inches)	28%	extreme
September Weather	30°C (85°F)	4 mm (0.2 inches)	41%	very high
October Weather	21°C (70°F)	5 mm (0.2 inches)	54%	high
November Weather	15°C (59°F)	13 mm (0.5 inches)	68%	moderate
December Weather	9°C (49°F)	13 mm (0.5 inches)	75%	moderate